Photo size converter
Convert a photo size between millimetres, centimetres, inches and pixels at the dpi you need. The table below gives the same numbers for every printed passport, visa and ID photo size on this site.
Every printed photo size on this site
Pixels are rounded to the nearest whole pixel. Online forms that set exact pixels, such as the DV lottery (600 × 600) or the Indian passport abroad (630 × 810), are on their own pages.
Swipe the table sideways to see every column.
| Size | Inches | Pixels at 300 dpi | Pixels at 600 dpi | Used by |
|---|---|---|---|---|
| 35 × 45 mm | 1.38 × 1.77 in | 413 × 531 | 827 × 1063 | UK passport photo, Driving licence photo (DVLA), Firearm / shotgun certificate photo, Irish visa photo, Irish passport photo and more |
| 33 × 48 mm | 1.30 × 1.89 in | 390 × 567 | 780 × 1134 | China visa photo |
| 45 × 57 mm | 1.77 × 2.24 in | 531 × 673 | 1063 × 1346 | Canada PAL (firearms licence) photo |
| 50.8 × 50.8 mm | 2.00 × 2.00 in | 600 × 600 | 1200 × 1200 | US passport photo, 2 × 2 inch photo |
| 70 × 100 mm | 2.76 × 3.94 in | 827 × 1181 | 1654 × 2362 | SPSV taxi driver licence photo |
The formulas
- inches = millimetres ÷ 25.4
- pixels = inches × dpi
- millimetres = pixels ÷ dpi × 25.4
To make a photo at one of these sizes with the face framed correctly, open the document's page, or use the photo maker, which also has a custom size option.
Questions
How many pixels is a 2 × 2 inch photo?
600 × 600 pixels at 300 dpi and 1200 × 1200 at 600 dpi. Pixels = inches × dpi.
How many pixels is 35 × 45 mm?
413 × 531 pixels at 300 dpi. Divide the millimetres by 25.4 to get inches, then multiply by the dpi.
Does a photo have a size in mm?
Only when it is printed. A digital photo has pixels; the dpi tag tells printers how big to print it. The same 600 × 600 pixel file prints at 2 × 2 inches at 300 dpi or 1 × 1 inch at 600 dpi.
What dpi should I use for a passport photo?
300 dpi is the usual print resolution and what this site's downloads use. Some forms state their own: India's PAN scan, for example, asks for 200 dpi. Where an online form gives exact pixels, use those pixels and ignore the dpi.